/**
 * Creates the base structure of a Tab.
 * @member Ext.tab.Tab
 */
@mixin extjs-tab {
  @include x-frame(
          $cls: 'tab',
          $ui: 'default-top',
          $border-radius: $tab-top-border-radius,
          $border-width: $tab-top-border-width,
          $background-color: $tab-base-color,
          $background-gradient: $tab-background-gradient,
          $background-direction: top,
          $table: true
  );

  @include x-frame(
          $cls: 'tab',
          $ui: 'default-bottom',
          $border-radius: $tab-bottom-border-radius,
          $border-width: $tab-bottom-border-width,
          $background-color: $tab-base-color,
          $background-gradient: $tab-background-gradient,
          $background-direction: bottom,
          $table: true
  );

  .#{$prefix}tab {
    z-index: 1;
    margin: 0 0 0 $tab-spacing;
    display: inline-block;
    zoom: 1;
    *display: inline;
    white-space: nowrap;
    height: $tab-height;
    border-color: $tab-border-color;
    cursor: pointer;
    cursor: hand;

    button {
      cursor: pointer;
      cursor: hand;
    }

    em {
      display: block;
      padding: 0 6px;
      line-height: 1px;
    }

    button {
      background: none;
      border: 0;
      padding: 0;
      margin: 0;
      -webkit-appearance: none;
      font-size: $tab-font-size;
      @if $tab-font-weight {
        font-weight: $tab-font-weight;
      }
      @if $tab-font-family {
        font-family: $tab-font-family;
      }

      color: $tab-color;
      outline: 0 none;
      overflow-x: visible;

      &::-moz-focus-inner {
        border: 0;
        padding: 0;
      }

      .#{$prefix}tab-inner {
        background-color: transparent;
        background-repeat: no-repeat;
        background-position: 0 -2px;
        display: block;
        text-align: center;
        white-space: nowrap;
        text-overflow: ellipsis;
        -o-text-overflow: ellipsis;
        overflow: hidden;
      }
    }

    img {
      display: none;
    }
  }

  .#{$prefix}border-box {
    .#{$prefix}tab-default-top {
      height: $tab-height + top($tabbar-top-strip-border-width);
    }

    .#{$prefix}tab-default-bottom {
      height: $tab-height + bottom($tabbar-bottom-strip-border-width);
    }
  }

  @if $include-ie {
    * html .#{$prefix}ie {
      .#{$prefix}tab button {
        width: 1px;
      }
    }

    .#{$prefix}strict .#{$prefix}ie6,
    .#{$prefix}strict .#{$prefix}ie7 {
      .#{$prefix}tab .#{$prefix}frame-mc {
        height: 100%;
      }
    }

    .#{$prefix}ie .#{$prefix}tab-active button:active {
      position: relative;
      top: -1px;
      left: -1px;
    }
  }

  $framepad: max(top($tab-top-border-radius), right($tab-top-border-radius)) - top($tab-top-border-width);

  .#{$prefix}tab-default-top {
    @if $tab-inner-border {
      @include inner-border(
              $width: $tab-top-inner-border-width,
              $color: $tab-inner-border-color
      );
    }

    border-bottom: 1px solid $tabbar-strip-border-color !important;

    em {
      padding-bottom: $framepad;
    }

    button,
    .#{$prefix}tab-inner {
      height: $tab-height - $framepad * 2 - top($tab-top-border-width);
      line-height: $tab-height - $framepad * 2 - top($tab-top-border-width);
    }
  }

  // corrects text being clipped at the bottom in safari4 & 5.0.5
  .#{$prefix}safari4,
  .#{$prefix}safari5_0 {
    .#{$prefix}tab-default-top .#{$prefix}tab-inner {
      line-height: $tab-height - $framepad * 2 - top($tab-top-border-width) - 2;
    }
  }

  .#{$prefix}nbr .#{$prefix}tab-default-top {
    border-bottom-width: 1px !important;
  }

  .#{$prefix}tab-default-top-active {
    border-bottom-color: $tabbar-strip-background-color !important;
  }

  $framepad: max(bottom($tab-bottom-border-radius), left($tab-bottom-border-radius)) - bottom($tab-bottom-border-width);

  .#{$prefix}tab-default-bottom {
    @if $tab-inner-border {
      @include inner-border(
              $width: $tab-bottom-inner-border-width,
              $color: $tab-inner-border-color
      );
    }

    border-top: 1px solid $tabbar-strip-border-color !important;

    @include inner-border(
            $width: $tab-bottom-inner-border-width,
            $color: $tab-inner-border-color
    );

    em {
      padding-top: $framepad;
    }

    button,
    .#{$prefix}tab-inner {
      height: $tab-height - $framepad * 2 - bottom($tab-bottom-border-width);
      line-height: $tab-height - $framepad * 2 - bottom($tab-bottom-border-width);
    }
  }

  .#{$prefix}nbr .#{$prefix}tab-default-bottom {
    border-top-width: 1px !important;
  }

  .#{$prefix}tab-default-bottom-active {
    border-top-color: $tabbar-strip-background-color !important;
  }

  .#{$prefix}tab-default-disabled {
    cursor: default;

    border-color: $tab-border-color-disabled;
    @include background-gradient($tab-base-color-disabled, $tab-background-gradient-disabled);

    button {
      color: $tab-color-disabled !important;
    }
  }

  .#{$prefix}tab-icon-text-left {
    .#{$prefix}tab-inner {
      padding-left: 20px;
    }
  }

  .#{$prefix}tab button {
    position: relative;
  }

  .#{$prefix}tab-icon {
    position: absolute;
    background-repeat: no-repeat;
    background-position: 0 -1px;
    top: 0;
    left: 0;
    right: auto;
    bottom: 0;
    width: 18px;
    height: 18px;
  }

  // Stop icons being clipped by the bottom of the button element
  .#{$prefix}strict {
    .#{$prefix}ie8 .#{$prefix}tab button,
    .#{$prefix}ie9 .#{$prefix}tab button {
      overflow-y: visible;
    }
  }

  .#{$prefix}tab-default-disabled .#{$prefix}tab-icon {
    @include opacity(.5);
  }

  /* In IE a disabled icon needs to be hidden or the opacity effect covers some of the text */
  .#{$prefix}tab-noicon .#{$prefix}tab-icon {
    display: none;
  }

  //over
  .#{$prefix}tab-over {
    @if $tab-border-color-over != $tab-border-color {
      border-color: $tab-border-color-over;
    }

    button {
      @if $tab-color-over != $tab-color {
        color: $tab-color-over;
      }
      @if $tab-font-weight-over != $tab-font-weight {
        font-weight: $tab-font-weight-over;
      }
      @if $tab-font-size-over != $tab-font-size {
        font-size: $tab-font-size-over;
      }
      @if $tab-font-family-over != $tab-font-family {
        font-family: $tab-font-family-over;
      }
    }
  }

  .#{$prefix}tab-top-over {
    @include background-gradient($tab-base-color-over, $tab-background-gradient-over, top);
  }
  .#{$prefix}tab-bottom-over {
    @include background-gradient($tab-base-color-over, $tab-background-gradient-over, bottom);
  }

  //active
  .#{$prefix}tab-active {
    z-index: 3;
    @if $tab-border-color-active != $tab-border-color {
      border-color: $tab-border-color-active;
    }

    button {
      @if $tab-color-active != $tab-color {
        color: $tab-color-active;
      }
      @if $tab-font-weight-active != $tab-font-weight {
        font-weight: $tab-font-weight-active;
      }
      @if $tab-font-size-active != $tab-font-size {
        font-size: $tab-font-size-active;
      }
      @if $tab-font-family-active != $tab-font-family {
        font-family: $tab-font-family-active;
      }
    }
  }

  .#{$prefix}tab-top-active {
    @include background-gradient($tab-base-color-active, $tab-background-gradient-active, top);
  }
  .#{$prefix}tab-bottom-active {
    @include background-gradient($tab-base-color-active, $tab-background-gradient-active, bottom);
  }

  //disabled
  .#{$prefix}tab-disabled {
    @if $tab-border-color-disabled != $tab-border-color {
      border-color: $tab-border-color-disabled;
    }

    button {
      @if $tab-color-disabled != $tab-color {
        color: $tab-color-disabled;
      }
      @if $tab-font-weight-disabled != $tab-font-weight {
        font-weight: $tab-font-weight-disabled;
      }
      @if $tab-font-size-disabled != $tab-font-size {
        font-size: $tab-font-size-disabled;
      }
      @if $tab-font-family-disabled != $tab-font-family {
        font-family: $tab-font-family-disabled;
      }
    }
  }

  .#{$prefix}tab-top-disabled {
    background-image: none;
    background: transparent;
    @include background-gradient($tab-base-color-disabled, $tab-background-gradient-disabled, top);
  }
  .#{$prefix}tab-bottom-disabled {
    background-image: none;
    background: transparent;
    @include background-gradient($tab-base-color-disabled, $tab-background-gradient-disabled, bottom);
  }

  @if not $supports-gradients or $compile-all {
    .#{$prefix}nlg {
      @if $tab-background-gradient != null {
        .#{$prefix}tab-top {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-bg.gif');
        }
        .#{$prefix}tab-bottom {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-bg.gif');
        }
      }

      @if $tab-background-gradient-over != null {
        .#{$prefix}tab-top-over {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-over-bg.gif');
        }
        .#{$prefix}tab-bottom-over {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-over-bg.gif');
        }
      }

      @if $tab-background-gradient-active != null {
        .#{$prefix}tab-top-active {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-active-bg.gif');
        }
        .#{$prefix}tab-bottom-active {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-active-bg.gif');
        }
      }

      @if $tab-background-gradient-disabled != null {
        .#{$prefix}tab-top-disabled {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-disabled-bg.gif') !important;
        }
        .#{$prefix}tab-bottom-disabled {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-disabled-bg.gif') !important;
        }
      }
    }
  }

  .#{$prefix}tab-closable em {
    padding-right: $tab-closable-icon-width + 3;
  }

  .#{$prefix}tab-close-btn {
    position: absolute;
    top: $tab-closable-icon-top;
    right: $tab-closable-icon-right;
    width: $tab-closable-icon-width;
    height: $tab-closable-icon-height;
    font-size: 0;
    line-height: 0;
    text-indent: -999px;
    background: no-repeat;
    background-image: theme-background-image($theme-name, $tab-closable-icon);
    @include opacity(.6);
  }

  .#{$prefix}nbr .#{$prefix}tab-close-btn {
    top: $nbr-tab-closable-icon-top;
    right: $nbr-tab-closable-icon-right;
  }

  /* Include the element name otherwise Internet Explorer 7 & 8 take a performance hit */
  a.#{$prefix}tab-close-btn:hover {
    @include opacity(1);
  }

  /* Include the element name to raise the specificity to equal the :hover */
  .#{$prefix}tab-default-disabled a.#{$prefix}tab-close-btn {
    @include opacity(0.3);
  }

  @if not $supports-border-radius or $compile-all {
    .#{$prefix}nbr {
      .#{$prefix}tab-top-over {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-over-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-over-sides.gif');
        }

        @if $tab-background-gradient-over != null {
          .#{$prefix}frame-mc {
            background-color: $tab-base-color-over;
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-top-over-bg.gif');
          }
        }
      }

      .#{$prefix}tab-bottom-over {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-over-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-over-sides.gif');
        }

        @if $tab-background-gradient-over != null {
          .#{$prefix}frame-mc {
            background-color: $tab-base-color-over;
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-over-bg.gif');
          }
        }
      }

      .#{$prefix}tab-top-active {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-active-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-active-sides.gif');
        }

        @if $tab-background-gradient-active != null {
          .#{$prefix}frame-mc {
            background-color: $tab-base-color-active;
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-top-active-bg.gif');
          }
        }
      }

      .#{$prefix}tab-bottom-active {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-active-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-active-sides.gif');
        }

        @if $tab-background-gradient-active != null {
          .#{$prefix}frame-mc {
            background-color: $tab-base-color-active;
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-active-bg.gif');
          }
        }
      }

      .#{$prefix}tab-top-disabled {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-disabled-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-top-disabled-sides.gif');
        }

        @if $tab-background-gradient-disabled != null {
          .#{$prefix}frame-mc {
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-top-disabled-bg.gif');
          }
        }
      }

      .#{$prefix}tab-bottom-disabled {
        .#{$prefix}frame-tl,
        .#{$prefix}frame-bl,
        .#{$prefix}frame-tr,
        .#{$prefix}frame-br,
        .#{$prefix}frame-tc,
        .#{$prefix}frame-bc {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-disabled-corners.gif');
        }

        .#{$prefix}frame-ml,
        .#{$prefix}frame-mr {
          background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-disabled-sides.gif');
        }

        @if $tab-background-gradient-disabled != null {
          .#{$prefix}frame-mc {
            background-repeat: repeat-x;
            background-image: theme-background-image($theme-name, 'tab/tab-default-bottom-disabled-bg.gif');
          }
        }
      }
    }
  }
}
